Improvement in electro-magnetic motors



J. H. GUEST.

ELECTRO MAGNETIC-MOTORS. No. 172,309. Patented Jan.1e`.1a7e.

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NITED STATES PATENT OFFICE.

JOENEENEY GUEST, oE BaooKLYN, NEw YORK.

IMPROVEMENT IN ELECTROfMAGNETIC MOTORS.

Specification forming part of Letters Patent N o. 172,309, dated January'18, 1876; Vapplication filed l August 10, 1875. v

To all whom it may concern Be it known that I, JOHN H. GUEST, ofBrooklyn, in the county of Kings -and State of New York, have inventedan Improvement in Electro-Magnetic Motors, of which the following. is aspecification:

This invention is vfor concentrating the effective magnetism, andrendering the motor very compact and efficient.

The magnet is composed of a central core, around which is a helix, sothat the current polarizes the same. Outside this helix is a cylinderand a second helix, and then a second cylinder and a third helix, and soon, whereby all the cylinders become polarized. These cylinders and coreare all in metallic contact with soft or cast iron heads that becomepolarized by induction, and these heads have parallel poles, approachingtoward each other and surrounding the helices, and these poles arerendered powerfully magnetic by induction, and this device becomes 4acylinder of highly-magnetic 4poles in a very compact form. Outside thiscylinder of poles there is a cylindrical cage of armatures correspondingin number with or a multiple of the poles, and either the cylinder ofpoles revolves with its core within the stationary circular cage ofarmatures, or else the armatures revolve about the cylinder of poles,the latter being stationary, and in either case thereis acircuit-breaker that interrupts the flow of the current through thehelices as the armatures leave the poles, and pass to the sphere oftheattraction ofthe next poles, when the current is again closed. The poweris taken from the portion that revolves by a pulley and belt orotherwise.

In the drawing a motor is shown with a stationary magnet. Figure lisalongitudinal section. Fig. 2 is a cross-section. Fig. Sis an elevationof the circuit-breaker, and Fig. 4 is a cross-section of a modificationof the electromagnet.

Vcorrugated or fluted, and if iuted, as shown in Fig. 4, the helicesshould be separately der before placing over them the next andcorrespondingly-luted outer cylinder.

In all cases the heads f and g are upon the core a, and the inner facesare in metallic con tact with the respective ends of the cylinders, andthe helices are wound or connected so as to be continuous, and hence thecurrent will pass through all the helices, and powerfully magnetize boththe core and cylinders, and, by induction, the heads f and g, and theinwardly-projecting polesh and k, will be powerfully magnctized, onenorth, the other south. These poles are parallel, or nearly so, to eachother, and cast with or attached to the heads f g, and they extendtoward each other, but there is a suflcient space between them toprevent contact, and they are preferably numerous and made with narrowedges,

as shown. Around the magnet is a cylinder or cage of armatures,0 o,connected with heads r'. If this cage is stationary the magnet willrevolve, and vice versa. I have shown the cage as revolving, andprovided with a cordpulley, s, by which the power is transferred,

through a belt, to the article to be revolved The poles f g andarmatures o being V-shaped sectionally, as shown, the narrow edgescoming toward each other increase the efficiency of the motor.

There is a circuit-breaker, t, placed in the circuit to the battery, andit is provided with as many non-conducting sections as there are pairsof armatures, so that the circuit will be interrupted as the armaturesarrive over the respective poles, and the circuit is not closed untilthe momentum has carried the armatures more than halt' the distance tothe next poles.

It is preferable to place the circuit-breaker upon one of the heads 1",and to havetwo contact-wheels, c o, as in Fig. 3. These close thecircuit simultaneously, and lessen the risk of imperfect contact. Thesecontactwheels U should be insulated and connected to one pole of thebattery by the wire 2. l The other pole of the battery is to beconnected to the cage of armatures surrounding such magnet,

and a circuit-breaker7 substantially as set forth.

3. An electro-magnetic motor made by combining a circular range ofV-shaped poles with a cylindrical cage of Vshaped armatures,substantially as specified.

Signed by me this 6th day of August, A. D. 1875.

J. H. GUEST.

Witnesses:

GEO. T. P1NGKNEY5 GHAs. H. SMITH.

